What does the traffic police's slow down hand signal look like?

[StGemma]

Action: Extend the right arm straight to the right front, parallel to the shoulder, with the palm facing downward and fingers closed together. Simultaneously turn the face and gaze 45 degrees to the right; then move the arm up and down. Simplified memory: The right hand gives a single-handed command with the palm facing downward, and an up-and-down movement indicates the slow down signal. Additional information: If the traffic police raises the left hand and lowers the right hand, it is a stop signal; if the traffic police lowers the left hand and extends the right hand to the side while moving it downward, it indicates the slow down signal. If the traffic police raises one hand forward and moves the other hand below, a downward movement of the right hand indicates a right turn signal, while a downward movement of the left hand indicates a left turn signal.